A.6 Drive Derating Data
The drive can be operated at above rated temperature, altitude and default carrier frequency
by derating the drive capacity.
u
Temperature Derating
As the ambient temperature for the drive is increased above the drive specification the drive
should be derated. Additionally parameter L8-35 Installation Method Selection on page 207
should be set according to enclosure type and mounting method as illustrated in Figure A.1.
n
Output Current Derating Due to Ambient Temperature
Set L8-12 and L8-35 according to the installation conditions when the ambient temperature
is above
the drive specification or if drives are side-by-side mounted in a cabinet. The output
current is derated as shown in Figure A.1.
No. Name Description Range Def.
L8-12
Ambient
Temperature
Setting
Adjust the drive overload (oL2) protection level when the
drive
is
installed in an environment that exceeds its ambient
temperature rating.
-10 to 50 30 °C
L8-35
Installation
Method
Selection
0: IP20/IP00 Drive
1: Side-by-Side Mounting
2: NEMA Type 1 Drive
<1>
3: Finless Drive or External Heatsink Installation
0 to 3 0
<1> This selection assumes that the drive is fitted with the NEMA Type 1 Kit option.
40
50
0
30
o
35
50%
70%
80%
85%
100%
oo
o
Drive
Rating
Ambient temp C
Parameter L8-12
Parameter L8-35 = 0 (IP20/IP00 Drive)
Parameter L8-35 = 2
(NEMA Type 1 Drive)
Parameter L8-35 = 1
(Side-by-side Mounting)
Parameter L8-35 = 3
(Finless Drive or External
Heatsink Installation)
Figure A.1 Ambient Temperature and Installation Method Derating
A.6 Drive Derating Data
YASKAWA ELECTRIC TOEP C710606 26B YASKAWA AC Drive – J1000 Quick Start Guide
207
A
Specifications
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